Line an 8×8-inch baking dish with parchment paper.
In a large mixing bowl, pour the crispy rice cereal and set aside.
In a microwave-safe bowl or saucepan, combine the chocolate chips, peanut butter, maple syrup, and coconut oil. Heat until melted, stirring until smooth and well combined.
Pour the melted mixture over the cereal and stir gently until all the cereal is coated evenly.
Transfer the mixture into the prepared baking dish. Press it down gently to even out the layers.
Refrigerate for at least 1 hour or until firm.
Once set, cut into squares or rectangles and serve.